一种多区段地铁轨道电位动态模拟系统  

A multi-section metro rail potential dynamic emulator system

作　　者：徐杰 杨晓峰[1] 王慧康 郑琼林[1] XU Jie;YANG Xiaofeng;WANG Huikang;ZHENG Trillion Q(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《北京交通大学学报》2020年第3期57-65,共9页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金(51737001);中央高校基本科研业务费专项资金(2019JBM058)。

摘　　要：在地铁系统中开展轨道电位与杂散电流防治措施的现场验证协调难度大,因此亟需一种多区段地铁轨道电位硬件动模系统,再现地铁系统中列车运行时的轨道电位动态分布特征.首先分析了可控电阻模块(Controllable Resistance Module, CRM),用于模拟列车运行过程中的轨道电阻变化规律;在此基础上,结合地铁系统的阻抗模型,进一步提出了多区段地铁轨道电位动态模拟系统(Multi-section Rail Potential Dynamic Emulator, MRPDE).研究了CRM和MRPDE的工作原理、参数设计和控制策略,并搭建相应的数字仿真模型和原理样机.仿真和实验结果表明:MRPDE能正确再现地铁系统轨道电位动态分布,进而为分段接入型轨道电位与杂散电流防治措施提供可靠的地面型试验平台.It is difficult to carry out on-site verification of the rail potential and stray current solutions in subway. Thus it is urgent to develop a multi-section metro hardware dynamic emulation system, which is able to emulate the dynamic characteristics of rail potential during trains running. A Controllable Resistance Module(CRM) is firstly introduced to emulate the trail resistance changing law during train operation. Then, based on the impedance model of the metro system, the multi-section Metro Rail Potential Dynamic Emulator(MRPDE) system is further proposed. In this paper, the working principle, parameter selection and control strategies are analyzed in detail. Moreover, the digital simulation model and experimental prototype are built. Extensive simulation and experimental results show that MRPDE may correctly reproduce the rail potential distribution, and it provides a reliable ground-based test platform for rail potential and stray current solutions.

关 键 词：城市轨道交通 轨道电位 杂散电流 可控电阻模块 动态模拟系统 多区段 

分 类 号：TM922[电气工程—电力电子与电力传动]